Air conditioner auxiliary condensing energy-saving device and air conditioner

Abstract

The utility model relates to air conditioning technical field more specifically, relate to a kind of air conditioner auxiliary condensing energy-saving device and air conditioner, comprising: backflow cooling mechanism and refrigerant condensing mechanism;Refrigerant condensing mechanism includes: lower box, catch basin, high-efficiency heat exchange tank and circulating water pump;Catch basin is located in lower box, and its side portion is provided with the water replenishing mouth extending to lower box outside, and bottom is equipped with water outlet;High-efficiency heat exchange tank has first medium passage and second medium passage, and first medium passage both ends are connected with catch basin water outlet and cooling water delivery pipe with circulating water pump respectively, and cooling water delivery pipe is connected with backflow cooling mechanism.The utility model is equipped with a set of auxiliary condensing device on the basis of original outdoor condenser of air conditioner, constructs double-mode condensing refrigeration system, can effectively improve system condensing capacity, especially under high temperature or poor ventilation condition, can significantly reduce condensing temperature and pressure.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and more specifically, to an air conditioning auxiliary condensation energy-saving device and an air conditioner. Background Technology

[0002] Air-cooled commercial air conditioning outdoor condensers (also known as outdoor units) are widely used heat exchange devices that cool refrigerant vapors by condensing them through air convection. However, the performance of this type of condenser is significantly dependent on external environmental conditions and equipment condition, and it suffers from the following prominent problems:

[0003] First, its condensation performance is highly susceptible to outdoor ambient temperature. Especially during the hot summer months, rising ambient temperatures reduce the condensation temperature difference, significantly decreasing heat exchange efficiency and making it difficult for the refrigerant to condense fully, thus degrading the overall system performance. Second, the ventilation conditions of the installation location also have a crucial impact on condensation and heat dissipation. If the surrounding airflow is obstructed, blocked, or there is backflow, heat cannot be dissipated in time, further exacerbating the condensation problem.

[0004] Furthermore, condenser fins, due to prolonged exposure to the outdoor environment, easily accumulate dust, lint, and other pollutants, causing blockage of airflow channels between the fins, increasing wind resistance, reducing the effective heat exchange area, and severely impacting heat dissipation. These factors collectively lead to increased condensing pressure and temperature, resulting in a series of serious consequences: including frequent compressor shutdowns triggered by high-pressure protection, which not only reduces refrigeration efficiency and affects system stability but also significantly increases overall power consumption; prolonged operation under high pressure also accelerates compressor aging, shortens equipment lifespan, and leads to higher maintenance costs and energy expenditures. Therefore, effectively improving the heat dissipation capacity of air-cooled condensers in high-temperature, poorly ventilated, or polluted environments, and reducing condensing pressure and system energy consumption, has become a critical technical problem urgently needing to be solved in this field. Utility Model Content

[0005] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0006] To at least partially solve the above problems, this utility model provides an air conditioning auxiliary condensing energy-saving device, including: a reflux cooling mechanism and a refrigerant condensing mechanism; the refrigerant condensing mechanism includes: a lower housing, a water collection tank, a high-efficiency heat exchange tank, and a circulating water pump; the water collection tank is located in the lower housing, with a water inlet extending to the outside of the lower housing on its side and a water outlet at its bottom; the high-efficiency heat exchange tank has a first medium channel and a second medium channel, the two ends of the first medium channel being connected to the water outlet of the water collection tank and a cooling water supply pipe with a circulating water pump, respectively, and the cooling water supply pipe being connected to the reflux cooling mechanism; the two ends of the second medium channel are connected to the gaseous refrigerant inlet and the liquid refrigerant outlet on the high-efficiency heat exchange tank, respectively; the reflux cooling mechanism is used to cool the heated cooling water from the cooling water supply pipe, and its bottom is connected to the lower housing, so that the cooled cooling water flows back to the water collection tank.

[0007] Furthermore, the refrigerant condensation mechanism also includes an electronic water processor installed on the cooling water supply pipe, which is located between the circulating water pump and the recirculation cooling mechanism.

[0008] Furthermore, a heat exchange spiral tube is installed inside the high-efficiency heat exchange tank, and the interior of the heat exchange spiral tube is a first medium channel; a second medium channel is formed between the heat exchange spiral tube and the high-efficiency heat exchange tank; one end of the heat exchange spiral tube is connected to the cooling water inlet provided on the high-efficiency heat exchange tank, and the other end of the heat exchange spiral tube is connected to the cooling water outlet provided on the high-efficiency heat exchange tank; the cooling water inlet is connected to the outlet of the water collection tank, and the cooling water outlet is connected to the cooling water supply pipe.

[0009] Furthermore, the gaseous refrigerant inlet is located below the liquid refrigerant outlet.

[0010] Furthermore, a float valve is connected to the water inlet of the water collection tank, and the float of the float valve is located inside the water collection tank.

[0011] Furthermore, a filter screen for filtering cooling water is installed at the outlet of the water collection tank, and the filter screen is located below the water inlet.

[0012] Furthermore, the recirculation cooling mechanism includes: an upper chamber that is fixedly connected to the lower chamber by bolts; a cooling axial flow fan for discharging hot and humid saturated air is installed at the exhaust port on the top of the upper chamber; inside the upper chamber, a dehydrator, a spray head, and a cooling packing layer are installed sequentially from top to bottom; the spray head is connected to a cooling water supply pipe to spray the heated cooling water from the cooling water supply pipe onto the cooling packing layer; the cooling water cooled by the cooling packing layer falls into the collection pool under its own gravity.

[0013] Furthermore, the lower housing has one or more outdoor air inlets on its side, located between the cooling packing layer and the water collection pool.

[0014] Furthermore, an air filter is installed inside the outdoor air inlet, and the air filter can be a fiber cotton filter.

[0015] An air conditioner, including the aforementioned air conditioning auxiliary condensing energy-saving device, further includes: an indoor air conditioning unit and an outdoor air-cooled condenser. The indoor air conditioning unit includes: a casing and an evaporator and a compressor disposed within the casing. The evaporator is connected to the low-pressure end of the compressor via a pipeline. The high-pressure end of the compressor is connected to the refrigerant inlet end of the outdoor air-cooled condenser via a first pipeline. The refrigerant outlet end of the outdoor air-cooled condenser is connected to the input end of the evaporator via a pipeline with an expansion valve. A first connection port, a first shut-off valve, and a second connection port are sequentially provided on the first pipeline. The first connection port is located between the first shut-off valve and the compressor. The gaseous refrigerant inlet is connected to the first connection port via a second pipeline with a second shut-off valve, and the liquid refrigerant outlet is connected to the second connection port via a third pipeline with a third shut-off valve.

[0016] Furthermore, a pressure sensor is also installed on the first pipeline; when the actual pressure of the gaseous refrigerant output by the compressor is less than or equal to the rated pressure value, the first shut-off valve opens, and the second and third shut-off valves close, so that the outdoor air-cooled condenser can be turned on independently; when the actual pressure of the gaseous refrigerant output by the compressor is greater than the rated pressure value, the first, second, and third shut-off valves all open, so that the outdoor air-cooled condenser and the air conditioning auxiliary condensing energy-saving device can be turned on simultaneously.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] This utility model relates to an air conditioner auxiliary condensing energy-saving device and air conditioner. By adding an auxiliary condensing device to the existing outdoor condenser of the air conditioner, a dual-mode condensing refrigeration system is constructed, which can effectively improve the system's condensing capacity. Especially under high temperature or poor ventilation conditions, it can significantly reduce condensing temperature and pressure, ensuring stable operation of the compressor within the rated pressure range, reducing the frequency of high-pressure protection, improving system reliability, and extending the compressor's service life. This utility model utilizes secondary heat exchange between gaseous refrigerant and cooling water in a high-efficiency heat exchange tank, which promotes the full condensation of more gaseous refrigerant into liquid, improving the condensing efficiency of refrigerant per unit flow rate. This improves the refrigerant state entering the expansion valve, enhancing the overall cooling effect and energy efficiency. Furthermore, it utilizes an independent closed-loop water circulation and reflux cooling mechanism to achieve efficient recovery and reuse of the cooling medium, eliminating the need for water spray cooling. This avoids the problems of scale and corrosion-induced blockage and shortened lifespan of the heat exchange spiral tubes, saves water, and reduces maintenance complexity and operating costs. The overall device has a reasonable structure, is easy to install and integrate, and achieves system performance optimization without changing the original main structure, offering both energy saving and stable operation benefits.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 A schematic diagram of an air conditioning auxiliary condensation energy-saving device provided in an embodiment of this utility model;

[0022] Figure 2 A schematic diagram of an air conditioner provided for an embodiment of this utility model.

[0023] Icons: 1. Axial fan for heat dissipation; 2. Dehydrator; 3. Spray head; 4. Cooling packing layer; 5. Bolt; 6. Water inlet; 7. Float valve; 8. Drain valve; 9. Cooling water supply pipe; 10. Electronic water processor; 11. Circulating water pump; 12. Cooling water outlet; 13. Gaseous refrigerant inlet; 14. High-efficiency heat exchange tank; 15. Heat exchange spiral tube; 16. Liquid refrigerant outlet; 17. Cooling water inlet; 18. Filter screen; 19. Water collection tank; 20. Outdoor air inlet; 21. Outdoor air-cooled condenser; 22. Housing; 23. Evaporator; 24. Compressor; 25. First pipeline; 26. Second pipeline; 27. Third pipeline; 28. Pressure sensor; 29. ​​Expansion valve; 30. First shut-off valve. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.

[0026] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0027] The following is in conjunction with the appendix Figure 1-2 The present invention will be described in further detail below.

[0028] Example 1:

[0029] like Figures 1-2 As shown, an air conditioning auxiliary condensing energy-saving device includes: a recirculation cooling mechanism and a refrigerant condensing mechanism; the refrigerant condensing mechanism includes: a lower housing, a water collection tank 19, a high-efficiency heat exchange tank 14, and a circulating water pump 11; the water collection tank 19 is located inside the lower housing, with a water inlet 6 extending to the outside of the lower housing on its side and a water outlet at its bottom; the high-efficiency heat exchange tank 14 has a first medium channel and a second medium channel, the two ends of the first medium channel being connected to the water outlet of the water collection tank 19 and a cooling water supply pipe 9 with a circulating water pump 11, respectively, and the cooling water supply pipe 9 being connected to the recirculation cooling mechanism; the two ends of the second medium channel are connected to the gaseous refrigerant inlet 13 and the liquid refrigerant outlet 16 on the high-efficiency heat exchange tank 14, respectively; the recirculation cooling mechanism is used to cool the heated cooling water from the cooling water supply pipe 9, and its bottom is connected to the lower housing, so that the cooled cooling water flows back to the water collection tank 19. The refrigerant condensation mechanism further includes an electronic water processor 10 installed on the cooling water supply pipe 9, located between the circulating water pump 11 and the reflux cooling mechanism. A float valve 7 is connected to the water inlet 6 of the water collection tank 19, with the float of the float valve 7 located inside the water collection tank 19. A filter screen 18 for filtering the cooling water is installed at the outlet of the water collection tank 19, located below the water inlet 6. A drain pipe with a drain valve 8 is installed at the bottom of the water collection tank 19, extending to the outside of the lower casing.

[0030] The working principle and technical effects of the above scheme are as follows:

[0031] In this utility model of an air conditioning auxiliary condensing energy-saving device, a water collection tank 19 is located inside the lower casing. A water inlet 6 on its side is used to replenish water to the water collection tank. A float valve 7 is connected to the water inlet 6. The float of the float valve 7 is located inside the water collection tank 19. When the water level in the water collection tank 19 drops, the float of the float valve 7 drops, opening the float valve 7 and allowing water to be replenished through the water inlet 6. When the water level rises to a suitable position, the float of the float valve 7 rises, closing the float valve 7 and stopping water replenishment. An outlet at the bottom of the water collection tank 19 is used to discharge cooling water. A filter screen 18 is installed at the outlet, located below the water inlet 6, to filter the outflowing cooling water and prevent impurities from entering subsequent equipment. Furthermore, a drain pipe with a drain valve 8 is installed at the bottom of the water collection tank 19, extending to the outside of the lower casing. The drain valve 8 can be opened periodically to discharge dirt from the water collection tank. The high-efficiency heat exchange tank 14 has a first medium channel and a second medium channel. The first medium channel is used for the flow of cooling water, with its two ends connected to the outlet of the water collection tank 19 and the cooling water supply pipe 9 equipped with the circulating water pump 11, respectively. The circulating water pump 11 provides power to draw cooling water from the water collection tank 19 and transport it through the cooling water supply pipe 9. The second medium channel is used for the flow of gaseous refrigerant, with its two ends connected to the gaseous refrigerant inlet 13 and the liquid refrigerant outlet 16 on the high-efficiency heat exchange tank 14, respectively. In the high-efficiency heat exchange tank 14, the gaseous refrigerant undergoes secondary heat exchange with the cooling water. The gaseous refrigerant releases heat and condenses into liquid refrigerant, which flows out from the liquid refrigerant outlet 16 and enters the air conditioning expansion valve; while the cooling water absorbs heat and its temperature rises. The electronic water processor 10 is installed on the cooling water supply pipe 9 and is located between the circulating water pump 11 and the return cooling mechanism. The electronic water processor 10 can be a water processor or filter from the prior art. The electronic water processor 10 can treat the passing cooling water to prevent the formation of scale, microorganisms, etc., ensuring the water quality of the cooling water and reducing the impact on downstream equipment. The recirculation cooling mechanism is connected to the cooling water supply pipe 9 and receives the heated cooling water from the cooling water supply pipe 9. The recirculation cooling mechanism cools the heated cooling water and its bottom is connected to the lower tank, so that the cooled cooling water flows back to the water collection tank 19, realizing the recycling of cooling water.

[0032] This utility model discloses an air conditioning auxiliary condensation energy-saving device. Through secondary heat exchange between gaseous refrigerant and cooling water in a high-efficiency heat exchange tank 14, it promotes the full condensation of more gaseous refrigerant into liquid, improving the condensation efficiency per unit flow rate of refrigerant. More liquid refrigerant enters the air conditioning expansion valve for evaporation, improving the refrigerant state entering the expansion valve and thus enhancing the overall cooling effect. This device can stabilize the compressor's operation within the rated pressure range. Due to the auxiliary condensation function, the pressure of the refrigeration system is more stable, avoiding problems such as high-pressure alarms caused by abnormal pressure, ensuring stable operation of the air conditioner. The independent closed-loop water circulation and recirculation cooling mechanism achieves efficient recovery and reuse of the cooling medium, saving water. Moreover, the overall device reduces maintenance complexity and equipment operation and maintenance costs. Simultaneously, due to the improved cooling efficiency, the compressor operates more stably, reducing the overall power consumption of the air conditioner, achieving energy saving and consumption reduction, and possessing the dual benefits of energy saving and stable operation. Furthermore, the device has a reasonable structure, making it easy to install on the basis of the existing outdoor condenser of an air-cooled commercial air conditioner, achieving system performance optimization without changing the original main structure.

[0033] Example 2:

[0034] like Figures 1-2 As shown, a heat exchange spiral tube 15 is installed inside the high-efficiency heat exchange tank 14, and the interior of the heat exchange spiral tube 15 serves as a first medium channel; a second medium channel is formed between the heat exchange spiral tube 15 and the high-efficiency heat exchange tank 14; one end of the heat exchange spiral tube 15 is connected to a cooling water inlet 17 located on the high-efficiency heat exchange tank 14, and the other end of the heat exchange spiral tube 15 is connected to a cooling water outlet 12 located on the high-efficiency heat exchange tank 14; the cooling water inlet 17 is connected to the outlet of the water collection tank 19, and the cooling water outlet 12 is connected to the cooling water supply pipe 9. The gaseous refrigerant inlet 13 is located below the liquid refrigerant outlet 16.

[0035] The working principle and technical effects of the above scheme are as follows:

[0036] In the air conditioning auxiliary condensing energy-saving device, the high-efficiency heat exchange tank 14 is a key component for realizing heat exchange between gaseous refrigerant and cooling water. Its internal structural design allows gaseous refrigerant and cooling water to flow in their respective channels and carry out efficient heat exchange, thereby realizing the condensation of gaseous refrigerant. Cooling water in the water collection tank 19 flows out from its bottom outlet. Since the cooling water inlet 17 is connected to the outlet of the water collection tank 19, the cooling water enters the heat exchange spiral tube 15 inside the high-efficiency heat exchange tank 14 through the cooling water inlet 17. The interior of the heat exchange spiral tube 15 is the first medium channel. The cooling water flows inside the spiral tube. The spiral channel design increases the flow path and residence time of the cooling water, which is conducive to fully exchanging heat with the surrounding gaseous refrigerant. After the cooling water is heated by heat exchange, it flows out from the other end of the heat exchange spiral tube 15, that is, the cooling water outlet 12 set on the high-efficiency heat exchange tank 14. The cooling water outlet 12 is connected to the cooling water supply pipe 9. The heated cooling water is transported to the return cooling mechanism for cooling and cooling down through the cooling water supply pipe 9. The cooled cooling water then flows back to the water collection tank 19 to complete one cycle of cooling water. Gaseous refrigerant enters through the gaseous refrigerant inlet 13 located on the high-efficiency heat exchange tank 14. Since the gaseous refrigerant inlet 13 is below the liquid refrigerant outlet 16, the gaseous refrigerant rises within the second medium channel formed between the heat exchange spiral tube 15 and the high-efficiency heat exchange tank 14. During this ascent, the gaseous refrigerant exchanges heat with the cooling water flowing within the heat exchange spiral tube 15, releasing heat and gradually condensing into liquid refrigerant. The condensed liquid refrigerant flows out from the liquid refrigerant outlet 16 and enters the air conditioning expansion valve for subsequent refrigeration cycles. In this invention, the design of the heat exchange spiral tube 15 increases the contact area and contact time between the cooling water and the gaseous refrigerant. The spiral channel creates turbulence in the cooling water flow, enhancing the heat transfer effect and more effectively carrying away the heat from the gaseous refrigerant, improving heat exchange efficiency and promoting the condensation of more gaseous refrigerant into liquid refrigerant. The arrangement of the gaseous refrigerant inlet 13 below the liquid refrigerant outlet 16 allows the gaseous refrigerant to exchange heat with the cooling water at a lower temperature as it rises. This counter-current heat exchange method has a higher heat transfer temperature difference and heat transfer efficiency in thermodynamics, further improving the heat exchange effect.

[0037] Example 3:

[0038] like Figures 1-2As shown, the recirculation cooling mechanism includes: an upper chamber that is sealed and fixed to the upper chamber by bolts 5; a cooling axial flow fan 1 for discharging hot and humid saturated air is installed at the exhaust port on the top of the upper chamber; inside the upper chamber, from top to bottom, a dehydrator 2, a spray head 3, and a cooling packing layer 4 are installed sequentially; the spray head 3 is connected to a cooling water supply pipe 9 to spray the heated cooling water from the cooling water supply pipe 9 onto the cooling packing layer 4; the cooled water, after being cooled by the cooling packing layer 4, falls into the collection tank 19 under its own gravity. The lower chamber has one or more outdoor air inlets 20 on its side, located between the cooling packing layer 4 and the collection tank 19, allowing outdoor air to enter the lower chamber.

[0039] The working principle and technical effects of the above scheme are as follows:

[0040] The main function of the recirculation cooling mechanism is to cool the heated cooling water from the cooling water supply pipe 9 and return the cooled water to the collection tank 19, realizing the recycling of cooling water and assisting the air conditioner to achieve more efficient cooling. The heated cooling water is transported to the spray head 3 through the cooling water supply pipe 9. The spray head 3 is connected to the cooling water supply pipe 9 and sprays the heated cooling water evenly onto the cooling packing layer 4. In this process, the spray head 3 plays a role in dispersing the cooling water, allowing the cooling water to better contact the air and the cooling packing layer 4. The lower housing side is provided with one or more outdoor air inlets 20, and the outdoor air inlets 20 Located near the cooling packing layer 4 and the water collection tank 19, outdoor air enters the lower chamber through the outdoor air inlet 20 and then passes through the cooling packing layer 4. During the airflow, it comes into full contact with the water film on the cooling packing layer 4. When cooling water is sprayed onto the cooling packing layer 4, a water film is formed. Outdoor air passes through the cooling packing layer 4 and undergoes phase change exchange with the water film. In this process, a small amount of water evaporates, and water evaporation requires the absorption of heat, which comes from the cooling water itself, thus lowering the temperature of the cooling water. This process is based on the principle of evaporative cooling, utilizing the latent heat of water evaporation to achieve cooling. The air cooled by the cooling packing layer 4 carries a certain amount of water vapor, becoming hot and humid saturated air. The hot and humid saturated air continues to rise and passes through the dehydrator 2. The function of the dehydrator 2 is to remove moisture from the air, preventing excessive moisture from being discharged with the air and causing waste of water resources. Finally, the axial fan 1 discharges the hot and humid saturated air that has been dehydrated from the exhaust port into the upper housing. After cooling, the unevaporated cooling water falls into the water collection tank 19 under its own gravity, completing one cycle of cooling water. The cooling water can then participate in the air conditioning auxiliary condensation process again.

[0041] In this invention, cooling water is evenly sprayed onto the cooling filler layer 4 via spray head 3, and undergoes phase change exchange with outdoor air. Utilizing the principle of water evaporation absorbing heat, the temperature of the cooling water can be effectively reduced. Evaporative cooling is more efficient than simple air cooling, and can quickly cool the heated cooling water to a suitable temperature, providing a good cooling medium for subsequent refrigerant condensation. The dehydrator 2 allows moisture in the hot, humid, saturated air to be recovered, reducing water waste. Moreover, the entire recirculation cooling mechanism adopts a closed-loop water circulation system, allowing the cooling water to be recycled without the need for large amounts of additional water, thus saving water resources.

[0042] Example 4:

[0043] like Figures 1-2 As shown, the air conditioner, including the aforementioned air conditioning auxiliary condensing energy-saving device, further includes: an indoor air conditioning unit and an outdoor air-cooled condenser 21. The indoor air conditioning unit includes: a casing 22 and an evaporator 23 and a compressor 24 disposed within the casing 22. The evaporator 23 is connected to the low-pressure end of the compressor 24 via a pipeline. The high-pressure end of the compressor 24 is connected to the refrigerant inlet end of the outdoor air-cooled condenser 21 via a first pipeline 25. The refrigerant outlet end of the outdoor air-cooled condenser 21 is connected to the input end of the evaporator 23 via a pipeline with an expansion valve 29. A first connecting port, a first shut-off valve 30, and a second connecting port are sequentially provided on the first pipeline 25. The first connecting port is located between the first shut-off valve 30 and the compressor 24. The gaseous refrigerant inlet 13 is connected to the first connecting port via a second pipeline 26 with a second shut-off valve, and the liquid refrigerant outlet 16 is connected to the second connecting port via a third pipeline 27 with a third shut-off valve. A pressure sensor 28 is also installed on the first pipeline 25. When the actual pressure of the gaseous refrigerant output by the compressor 24 is less than or equal to the rated pressure, the first shut-off valve 30 opens, and the second and third shut-off valves close, allowing the outdoor air-cooled condenser 21 to open independently. When the actual pressure of the gaseous refrigerant output by the compressor 24 is greater than the rated pressure, the first shut-off valve 30, the second shut-off valve, and the third shut-off valve all open, allowing the outdoor air-cooled condenser 21 and the air conditioning auxiliary condensing energy-saving device to open synchronously. The first shut-off valve 30, the second shut-off valve, and the third shut-off valve are all electrically controlled valves, and all three are connected to the controller.

[0044] The working principle and technical effects of the above scheme are as follows:

[0045] This utility model of an air conditioner combines a traditional outdoor air-cooled condenser 21 and an air conditioner auxiliary condensing energy-saving device. By monitoring the pressure of the gaseous refrigerant output by the compressor 24, it achieves intelligent switching between two condensation modes to achieve efficient cooling and energy saving. The air conditioner indoor unit casing 22 is equipped with an evaporator 23 and a compressor 24. The evaporator 23 is connected to the low-pressure end of the compressor 24 through a pipeline. During the cooling process, the liquid refrigerant evaporates and absorbs heat in the evaporator 23, which lowers the indoor air temperature. The gaseous refrigerant in the evaporator 23 is drawn into the compressor 24, which compresses the gaseous refrigerant, increasing its pressure and temperature. The high-pressure end of the compressor 24 is connected to the refrigerant inlet end of the outdoor air-cooled condenser 21 through a first pipeline 25. The first pipeline 25 is sequentially equipped with a first connecting port, a first shut-off valve 30, and a second connecting port. The first connecting port is located between the first shut-off valve 30 and the compressor 24. At the same time, a pressure sensor 28 is also installed on the first pipeline 25 to monitor the pressure of the gaseous refrigerant output by the compressor 24 in real time. When pressure sensor 28 detects that the actual pressure of the gaseous refrigerant output by compressor 24 is less than or equal to the rated pressure, the controller controls the first shut-off valve 30 to open and the second and third shut-off valves to close. At this time, the gaseous refrigerant discharged by compressor 24 directly enters the outdoor air-cooled condenser 21 through the first pipe 25 for condensation. The outdoor air-cooled condenser 21 is opened alone to condense the gaseous refrigerant into liquid refrigerant. When pressure sensor 28 detects that the actual pressure of the gaseous refrigerant output by compressor 24 is greater than the rated pressure, the controller controls the first shut-off valve 30, the second shut-off valve, and the third shut-off valve to open. Part of the gaseous refrigerant enters the outdoor air-cooled condenser 21 through the first pipe 25, and the other part enters the gaseous refrigerant inlet 13 of the high-efficiency heat exchange tank 14 of the air conditioning auxiliary condensing energy-saving device through the second pipe 26 with the second shut-off valve from the first pipe port. In the high-efficiency heat exchange tank 14, gaseous refrigerant exchanges heat with cooling water, condenses into liquid refrigerant, and flows out from the liquid refrigerant outlet 16. It then flows back into the first pipeline 25 through the second inlet via the third pipeline 27 equipped with a third shut-off valve, merging with the liquid refrigerant exiting from the outdoor air-cooled condenser 21. Finally, the liquid refrigerant enters the evaporator 23 through the pipeline equipped with the expansion valve 29, completing the refrigeration cycle. The condensed liquid refrigerant enters the inlet of the evaporator 23 through the pipeline equipped with the expansion valve 29. The expansion valve 29 throttles and reduces the pressure of the liquid refrigerant, causing it to evaporate and absorb heat in the evaporator 23, becoming gaseous again, completing a full refrigeration cycle.

[0046] In this air conditioner, when the pressure of the gaseous refrigerant output by the compressor 24 is too high, the air conditioning auxiliary condensing energy-saving device works synchronously with the outdoor air-cooled condenser 21. Through the secondary heat exchange between the gaseous refrigerant and cooling water in the high-efficiency heat exchange tank 14, more gaseous refrigerant can be fully condensed into liquid, improving the condensing efficiency per unit flow of refrigerant and thus enhancing the overall cooling effect. The pressure sensor 28 and the electrically controlled shut-off valve enable the air conditioning system to automatically switch the condensing mode according to the output pressure of the compressor 24. When the pressure is too high, the air conditioning auxiliary condensing energy-saving device is activated in time, stabilizing the pressure of the refrigeration system and avoiding problems such as the compressor issuing a high-pressure alarm protection due to abnormal pressure, thus ensuring the stable operation of the air conditioning system. When the pressure of the gaseous refrigerant output by the compressor 24 is normal, only the outdoor air-cooled condenser 21 is used for condensation, reducing the operating time of the air conditioning auxiliary condensing energy-saving device and reducing energy consumption. When the pressure is too high, the intervention of the air conditioning auxiliary condensing energy-saving device improves the cooling efficiency, allowing the compressor to work under a more stable pressure, reducing unnecessary energy consumption, and achieving the goal of energy saving. The use of the air conditioning auxiliary condensing energy-saving device avoids the outdoor air-cooled condenser 21 from operating under high pressure and high temperature for extended periods, reducing its wear and tear. Simultaneously, components such as the electronic water processor 10 and dehydrator 2 within the device prevent damage from scale, corrosion, and moisture, extending the overall service life of the air conditioning system. This air conditioning system, based on the original outdoor air-cooled condenser 21, achieves integration with the air conditioning auxiliary condensing energy-saving device through simple piping connections and shut-off valve control. The overall device has a reasonable structure, is easy to install and integrate, and optimizes system performance without altering the original main structure, exhibiting good compatibility and scalability.

[0047] This utility model discloses an auxiliary condensing energy-saving device for air conditioning, applicable to the technical retrofitting of air-cooled commercial air conditioners with a power output of less than 50kW. During retrofitting, one auxiliary condensing energy-saving device can be equipped with two sets of high-efficiency heat exchange tanks to provide auxiliary condensation for the refrigerant in two separate refrigeration systems. The entire device adopts a split design, facilitating disassembly, assembly, and maintenance. The air-cooled and liquid-cooled condensing modes can be automatically switched without interference. Using high-efficiency heat exchange tanks for refrigerant condensation offers advantages over other heat exchangers, including smaller size, higher efficiency, easier maintenance, and stronger resistance to high temperatures and pressures. The use of pressure sensors to detect pressure changes at the high-pressure end of the compressor results in a faster response time compared to temperature and current sensors, is less affected by external factors, and provides more precise control.

[0048] The following are the test results of the prototype air conditioner with the auxiliary condensing energy-saving device of this utility model added:

[0049] Modify a certain brand of air-cooled commercial air conditioner with a cooling capacity of 15kW by adding an auxiliary condensing energy-saving device;

[0050] Outdoor testing environment: 30.5℃ / 67.8%; Refrigerant: R410a;

[0051] Compressor pressure test:

[0052] Testing tools: High and low pressure gauges specifically designed for air conditioners are used for testing;

[0053] When the outdoor condenser unit is started but the auxiliary condenser economizer is not started, the high-pressure end pressure of the compressor is 2.8 MPa; when both the outdoor condenser unit and the auxiliary condenser economizer are started, the high-pressure end pressure of the compressor is 1.9 MPa.

[0054] Operating current test:

[0055] Testing tools: A clamp meter was used for testing. When the outdoor condenser unit was started but the auxiliary condenser economizer was not started, the compressor operating current was 12.5A; when both the outdoor condenser unit and the auxiliary condenser economizer were started, the compressor operating current was 10.3A.

[0056] Compressor exhaust temperature test:

[0057] Testing tools: An infrared tester was used. When the outdoor condenser unit was started but the auxiliary condenser economizer was not started, the compressor discharge temperature was 98.4℃. When both the outdoor condenser unit and the auxiliary condenser economizer were started, the compressor discharge temperature was 45.3℃.

[0058] The results of the compressor pressure, operating current, and exhaust temperature tests show that the effect is very obvious.

[0059] Testing with the electricity meter:

[0060] This test mainly compares the power consumption of the outdoor condenser and the auxiliary condensing energy-saving device of the air conditioner within the same time period, and calculates the power saving rate. The test uses a method of starting the outdoor condenser of the air conditioner alone for one day and a method of starting the outdoor condenser and the auxiliary condensing energy-saving device together for one day. One set of data is compared and tested. A total of 30 days of data are collected using this method to obtain the average energy saving effect.

[0061] The test data for the 30 days from August 10 to September 9, 2024 is as follows:

[0062] The power consumption of starting the outdoor condenser of the air conditioner alone is 2880 kWh, and the power consumption of starting the outdoor condenser of the air conditioner in combination with the auxiliary condenser energy-saving device is 1986 kWh. The calculation shows that the average power saving rate is 31%.

[0063] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0064] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0065] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. An air conditioning auxiliary condensation energy-saving device, characterized in that, include: The refrigerant condensation mechanism includes a lower housing, a water collection tank (19), a high-efficiency heat exchange tank (14), and a circulating water pump (11). The water collection tank (19) is located inside the lower housing, with a water inlet (6) extending to the outside of the lower housing on its side and a water outlet at the bottom. The high-efficiency heat exchange tank (14) has a first medium channel and a second medium channel. The two ends of the first medium channel are connected to the water outlet of the water collection tank (19) and the cooling water supply pipe (9) with the circulating water pump (11) respectively. The cooling water supply pipe (9) is connected to the refrigerant condensation mechanism. The two ends of the second medium channel are connected to the gaseous refrigerant inlet (13) and the liquid refrigerant outlet (16) on the high-efficiency heat exchange tank (14) respectively. The refrigerant condensation mechanism is used to cool the heated cooling water from the cooling water supply pipe (9). Its bottom is connected to the lower housing so that the cooled water flows back to the water collection tank (19).

2. The air conditioning auxiliary condensation energy-saving device according to claim 1, characterized in that, The refrigerant condensation mechanism further includes an electronic water processor (10) installed on the cooling water supply pipe (9), which is located between the circulating water pump (11) and the reflux cooling mechanism.

3. The air conditioning auxiliary condensation energy-saving device according to claim 1, characterized in that, The high-efficiency heat exchange tank (14) is equipped with a heat exchange spiral tube (15), and the inside of the heat exchange spiral tube (15) is the first medium channel; a second medium channel is formed between the heat exchange spiral tube (15) and the high-efficiency heat exchange tank (14); one end of the heat exchange spiral tube (15) is connected to the cooling water inlet (17) set on the high-efficiency heat exchange tank (14), and the other end of the heat exchange spiral tube (15) is connected to the cooling water outlet (12) set on the high-efficiency heat exchange tank (14); the cooling water inlet (17) is connected to the outlet of the water collection pool (19), and the cooling water outlet (12) is connected to the cooling water supply pipe (9).

4. The air conditioning auxiliary condensation energy-saving device according to claim 1, characterized in that, The gaseous refrigerant inlet (13) is located below the liquid refrigerant outlet (16).

5. An air conditioning auxiliary condensation energy-saving device according to claim 1, characterized in that, A float valve (7) is connected to the water inlet (6) of the water collection tank (19), and the float of the float valve (7) is located inside the water collection tank (19).

6. An air conditioning auxiliary condensation energy-saving device according to claim 1, characterized in that, The outlet of the water collection tank (19) is equipped with a filter screen (18) for filtering the cooling water, and the filter screen (18) is located below the water inlet (6).

7. An air conditioning auxiliary condensation energy-saving device according to claim 1, characterized in that, The recirculation cooling mechanism includes: an upper box that is sealed and fixed above the lower box by bolts (5), and a heat dissipation axial flow fan (1) for discharging hot and humid saturated air is installed at the exhaust port on the top of the upper box; inside the upper box, a dehydrator (2), a spray head (3) and a cooling packing layer (4) are installed from top to bottom; the spray head (3) is connected to the cooling water supply pipe (9) to spray the heated cooling water from the cooling water supply pipe (9) onto the cooling packing layer (4), and the cooling water cooled by the cooling packing layer (4) falls into the water collection pool (19) under its own gravity.

8. An air conditioning auxiliary condensation energy-saving device according to claim 7, characterized in that, The lower housing has one or more outdoor air inlets (20) on its side, which are located between the cooling packing layer (4) and the water collection pool (19).

9. An air conditioner, comprising the air conditioner auxiliary condensing energy-saving device according to any one of claims 1-8, characterized in that, Also includes: An indoor air conditioning unit and an outdoor air-cooled condenser (21) are provided. The indoor air conditioning unit includes a casing (22) and an evaporator (23) and a compressor (24) installed in the casing (22). The evaporator (23) is connected to the low-pressure end of the compressor (24) through a pipeline. The high-pressure end of the compressor (24) is connected to the refrigerant inlet end of the outdoor air-cooled condenser (21) through a first pipeline (25). The refrigerant outlet end of the outdoor air-cooled condenser (21) is connected to the input end of the evaporator (23) through a pipeline with an expansion valve (29). A first connection port, a first shut-off valve (30) and a second connection port are sequentially provided on the first pipeline (25). The first connection port is located between the first shut-off valve (30) and the compressor (24). The gaseous refrigerant inlet (13) is connected to the first connection port through a second pipeline (26) with a second shut-off valve. The liquid refrigerant outlet (16) is connected to the second connection port through a third pipeline (27) with a third shut-off valve.

10. The air conditioner according to claim 9, characterized in that, A pressure sensor (28) is also installed on the first pipeline (25).

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